Improved compositioi fob tamiig



@iaitrh states i latentgfiine.

ELI KEITH, OF WABASH, INDIANA, AND ALFRED A. EYLAR, CF PONTIAC,

' ILLINOIS.

Lam Patent No. 78,672, dated June 9, 1868.

IMPROVED COMPOSITIONTOR TANNING.

TO ALL WHOM IT MAY CONCERN:

Be it known that we, ELI KEITH, oi the city and county of Wabash, in the State of Indiana, and ALFRE A. EYLAR, of Pontiac, in the county of Livingston, and State of Illinois, have invented a new and improved Composition for Tanning; and we do hereby declare the following to be a full, clear, and exact description of the same. i

The ingredients We use are four, namely;

1. Terra-japonica, gambier,cutch, or barkv 2. Lye drained from Wood ashes.

3. Common salt. i

4. Liqt tor alumz'm's COWtPOSii'ZLT.

The action of the difi'erent ingredients on the hides is as follows:

First. The terra-japonica, gambier, cutoh, or barlc gives color to the. leather, as well as changing thegluinous substance of the hides, and converting it into leather.

Second. The lye raises the hides, acts upon the fibres of the leather, makes them strong, and also makes the leather soft and pliant.

.Third. The salt is of a cooling and cleansing nature; it gives weight and a permanent softness to the leather.

Fourth. Liquor almnim's oo'mposz'tm' is a powerful astringent; it contracts the fibres and fills up the leather, and, in union with the other ingredients, gives the leather weight and body.

The operation of tanning is about as follows:

We, of course, do not confine ourselves to the exact proportions or time, but give this as a mod'eof tanning which we have practically adopted.

The hides are limed and baited, us usual, before they are ready for our tanning process.

To tan six sides oflupper leather, take- Forty gallons of water;

Thirty-six pounds of terra-japonica, gambier, or cutch;

One gallon of lye, (strong enough to float an egg;)

Seven pounds of common salt;

One and a halt' gallon liquor alzmtz'nis comyosit-ur.

These are tebe compounded as follows: I Dissolve ten pounds terra-japonica, gambier, or 'cutchin boiling water; then pour the solution into the forty gallons of Water; then compound the other three ingredients (before adding them to the tanning-liquid) as follows:

Three pounds of salt, two quarts of lye, and two quarts of liquor aZ-zmzz'm's compositor; stir and mix them well; then add them to the tanning-liquid; then stir or agitate the liquid thus compounded.

Place the hides in the liquid thus compounded, handle them up twice a day for four days; then take them out and renew the liquor by adding ten pounds terra-japonica, gambier, or catch, dissolved as before, two pounds of salt, seven quarts of lye, and two quarts liquor alumim's compositur, compounded as before, and afterwards applied to the tanning-liquid. Stir and agitate; then place the hides in the liquid thus strengthened; handle them up twice a day for six days; then take the hides out and shave them, and strengthen the liquor by adding the remaining portion of the ingredients, that is to say, sixteen pounds tcrra-japonica, gambier, or catch, two pounds of salt, one quart of lye, and two quarts of Zz'quor alumz'm's oompositur. The ingredients to be-dissolved and compounded as previously mentioned. Place the hides in the liquor thus strengthened, and handle them up twice a day for nine da'ys. This completes the operation of, tanning.

To tan silt calf-skins in ten days we use- Thirty gallons of water.

Twenty pounds of terra-joponioa, gombier, or catch.

Three quarts of lye.

Four pounds of salt.

Nine pints of liquor alumz'm's compositor.

These ingredients are to be used as follows: 1

Dissolve eight pounds of terrwjaponieo, gnmhier, or ou teh in Boiling water, and pour the solution into the thirty gallons of water. Then compound three pints of lye, two pounds of salt, and four pints of liquor aZumi-m'e compositor, and .add this composition to ,the tanning-liquid. Place the'calf skins in the liquid thus compounded, and handle them up twice a; day forfour days, hgitating the liquid well each time of handling. Then take the calf-skins out, and renew the liquor by adding the remaining portion of the ingredients, that is to say, twelve pounds of terra-jeponiea, gombier, oreuteh, three pints of lye, two pounds of salt, and live pints of liguoralumz'm's compositur, compounded as previously mentioned, and then added to the tanning-liquid, Place the calf-skins in the liquor thus strengthened, and handle them up twice a day for six days. This completes the operation of tanning.- o

' To tan thirty sides of'upper leather with bark, odd to a suflicient quantity of bark or bark-liq nid, a compound of three gallons of strong lye, four and a. half gallons of liquor aluminis oomposz'tur, and fifteen ponnds of salt.

This will make the leather tan faster, with less bark; it also makes the leather stronger, aInd gives it weight and olisbility. I

Having thus described our invention, whet we claim as new therein, and desire to secure by Letters Patent, is-- The tenningmomposition and process, substantially as herein specified. l To the above specification of ourinvention we have signed our-hands, this 26th day of March, 1868* ELI KEITH,

ALFRED A. EYLAR.

Witnesses 2 Ocrsvms KNIGHT, Ronmrr W. Scorer. 

